【睡眠用bgm】α波で自律神経を整えて疲労回復【穏やかな波音×528hz-動画中広告なし-】
Synopsis
自然音のもつ1/fゆらぎと、リラックス状態のときに出るα波という脳波によって、眠りにつきやすくして、熟睡（δ波）状態へと ...
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